Improvement in wash-boilers



' anni effin.

HENRY R. v ROBBINS, OF BALTIMORE,v MARYLAND.

Letters Patent No. 112,739, dated March l4, 1,871.

IMPROVEMENT IN WASH-BOlLERS.

The Schedule referred to in these Letters liatent and making part of thesame.

ing drawing making a part of this specification, in.

Figure 1 is a sectional elevation of' the boiler;`

and l Figure 2 is a sectional elevation of the central trap.

' This invention relates to that' class of vwashboilers in which thewater enters a'trap 'placed at the middle of the bottom of the boiler,and is thereby conducted through the bottom .to pipes branching off fromthe trap, passing upward throughthe bottom, and opening into the boilerat each end of the latter, at points near its top, by which arrangementthe water iu the boiler is made to flow in continuous circuits throughthe trap and pipes.

The invention consists in a cylindrical trap for the aforesaid purpose,provided with holes in its gouter shell for the admission ot' water, andwith a series of circular concentric partial partitions, which dividesits interior into annular chambers, opening one into another, aud, whileadmitting of a free flow of water .into and through the trap,ratthersametime preventing its return into the boiler in any other way thanthrough the pipes provided for that purpose.

The invention lalso consistsin securing a metal plate to the under sideof the boiler .by means of nuts, and the shoulders or ends of the elbowsof vthe pipes passing through it, said plate standing'off' from theboiler-bottom at a suitable distance to prevent the same becoming soheated as to scorch clothes resting thereon.

-Referring to the drawingc is the boiler.;

b, the trap.

c, the pipes, placed beneath the boiler, and attached at one end to acollar, d, that is fastened to the lower extremity of the trap, and attheir other ends to elbows e, that pass upward through the bottom of theboi er. v fare vertical pipes, placed either within the boiler oroutside of it, or partly within and partly without the boiler, at theends thereof', said pipes being con uected at' their lower extremitieswith the elbows c, and being provided at their upper extremities withelbows h, that turn into a horizontal position, and discharge water intothe boiler.

I The foregoing arrangement presents no novel features.

l The trap b consists of a cylindrical chamber, to the outside of whichis secored a daring guard, fi, which however, be cast in one piece withit.

prevents the clothes from clogging the holes in the wall of the trap,through which water finds its way to the interior thereof.

Next, within the outer shell of the trap, and ata suitable distancetherefrom, is a circular partitionfm, which extends from the top to thebottom of the trap, and has an opening, n, in one side.

There are no holes inthe outer'shell of the trap, opposite the openingn, and, therefore, the` water that Hows between the said outer shell andthe partition m, when it reaches the opening n, enters the same.

Next, within the partition m, and concentric therewith, and at asuitable distance therefrom, is a partition, o, the opening e' of whichis diametrically opposite the opening n, so that the water which entersat' the latter nds novegress till it'arrives at the openm r.'

lVithin the partition ois a central pipe, s, having an opening, t,diametrically opposite the opening r, so that the water that enterstheatter has to How around to the opening t before finding egress.

Entering the pipe s, the water is thereby conducted downward. throughthe bottom of the boiler tothe collar d.

It will be seen that this arrangement, while it pre` sents no maunerofobstacle to the passage of water from the outside through the trap,eiectually prevents it from passing hack from inside to outside, exceptthrough the proper channels-the pipes c f.

vA plate, l, of cast or wrought metal, is attached to the bottom of theboiler in any suitable manner, and stands far enough off from the sameto protect the bottom from the heating action of the tire beneath, andthus prevents scorching of the clothes within.

Thel plate l is provided with orifices, through which the trap b andelbows epass when the two latter are made in separate pieces from theplate. They may,

The plate l may be applied to any wash-boiler.

Having thus described my invention,

What I claim as new, and desire to secure by Letters Patent, is

l. 'lhe trap b, provided with the external flaring guard i, and withinternal partitions of any desired number, and with a central pipepassing down through the bottorn'of the boiler, said partitions and pipebeing provided with openings. located with respect'to each other, asdescribed.

2. The plate l, arranged beneath the boiler, and secured between Athenuts c and the shoulders or ends of the elbows e c, as herein shown anddescribed, tbr the purpose specified.

. HENRY R. ROBBINS.

' Witnesses: p,

SOLON C. KEMON, Trios. D. D. OURANn.

